im looking at buying a cheap gun does anyone have experience with either the devilbiss slg 610, the devilbiss flg 5 or the az3 hte iawata been doing some research and people seem to say the slg 610 isnt that good but cant find info on the other 2. I used to use gtis when i was painting properly 7 years ago will any of these guns perform like the gtis did many thanks